1. Wide Compatibility - Works seamlessly with most eufy video doorbells, offering reliable ringing and notifications throughout your home. For a detailed compatibility list, please refer to the FAQ. 2. Multiple Chime Options - Comes with 10 pre-installed tones that suit various preferences and occasions, so you can find the right one for you. 3. Stable Dual-Band Connection - Enjoy faster speeds, reduced network congestion, and smooth performance at all times with advanced 2.4 GHz and 5 GHz dual-band Wi-Fi connectivity. 4. Quick and Easy Setup - Supports auto-discovery and effortless network integration with Bluetooth auto-pairing, allowing fast installation within minutes. 5. Loud and Reliable Alerts - Volume can be adjusted to up to 80 dB for powerful and dependable alerts, letting you hear visitor notifications clearly even from the second floor or across larger spaces. eufy Security Video Doorbell Add-On Chime